I will share this app since it really works!
This app is called Crowd Call. With many positive reviews, this app is surely a must have app if you're always needing to call someone.
Here are the list of countries that can avail of free call.
US Virgin Islands
This app will allow you to make 10 free calls everyday on countries listed above. Any countries not listed, small credits will be required. Good thing here is that in every call, you will have unlimited time. And it lets you do conference to 5 people at the same time. This is really awesome.
Just install the apk on your android device and to make a call you need to follow this:
1. type in the number or the name you want to call and press call now
2. It will show "crowd call in progress". Just wait till you get a call from crowd call server.
3. Just after receiving the call, you need to press answer.
to do conference you need to press 1.
(this app is also available for iphone users)
Tips: Delete recent calls to avoid making same phone calls (bugs).
DOWNLOAD HERE (market link)
DOWNLOAD HERE (APK)